Tracking fishing from space

Satellite data from thousands of high seas fishing vessels over four years illuminate global fishing’s scope and pattern and hold promise for improving ocean management across the planet.

An artificial eclipse for imaging extrasolar planets

As anyone anticipating this month’s eclipse knows, one way to dim a star is to block it with something else – a moon, perhaps. Or in the case of distant stars whose light masks orbiting exoplanets, a shade-throwing satellite might do.

Black holes appear to be orbiting each other

After 12 years observing black holes at the center of an amalgam of ancient galaxies, a multi-institution team, including Stanford’s Roger Romani, may have recorded the smallest-ever movement of an object across the sky.